The more useful you are to him, the more likely he'll be interested in sharing. So yes, someone who will offer him alcohol and can help with the undead are two major points in his favor! See you can talk to ghosts and still be a functioning person, Five knew it wasn't so hard.

(Just don't expect him to you know... actually care about them, this is entirely for his benefit. Better not to trust him too easily, but he is awfully cute and small.)

And in his mind, there's nothing easier than a bank heist. He can do everything and anything so just keep the car running.